초록 ▼

A single-in/single-out exhaust muffler 20 for an internal combustion engine includes a curved inner tube (26), an exhaust inlet (24) in communication with a first leg (32) of the curved inner tube (26), and an exhaust outlet (28) in communication with a second leg (36) of the curved inner tube (26).

A single-in/single-out exhaust muffler 20 for an internal combustion engine includes a curved inner tube (26), an exhaust inlet (24) in communication with a first leg (32) of the curved inner tube (26), and an exhaust outlet (28) in communication with a second leg (36) of the curved inner tube (26). The exhaust inlet (24) is configured to receive exhaust gas (22) and the exhaust outlet (28) is configured to output the exhaust gas (22). A curved portion (38) interconnects the first and second legs (32 and 36). A sound absorbing material (40) is wrapped around the curved inner tube (26), and a muffler housing (42) encloses the curved inner tube (26) and the sound absorbing material (40). The first leg (32) includes a perforate region (58, 60) and an imperforate region (62, 64) arranged about a circumference (66) of the first leg (32). Likewise, the second leg (36) includes a perforate region (68, 70) and an imperforate region (72, 74) arranged about a circumference (76) of the second leg (36). The second leg (36) is aligned with the first leg (32) so that the imperforate regions (64, 72) face each other on an inside curve (80) of the curved inner tube (26). Alternative embodiments of the muffler (20) include a dual-in/single-out muffler (82), a single-in/dual-out muffler (118), and a dual-in/dual-out muffler (144).

대표청구항 ▼

1. An exhaust muffler for an internal combustion engine comprising:a curved inner tube including: a first leg having a first perforate region and a first imperforate region arranged about a circumference of said first leg; a second leg having a second perforate region and a second imperforate region

1. An exhaust muffler for an internal combustion engine comprising:a curved inner tube including: a first leg having a first perforate region and a first imperforate region arranged about a circumference of said first leg; a second leg having a second perforate region and a second imperforate region arranged about a circumference of said second leg, said second leg being aligned with said first leg so that said second imperforate region faces said first imperforate region on an inside curve of said curved inner tube; and a curved portion interconnecting said first and second legs; an exhaust inlet in communication with a first end of said first leg and configured to receive exhaust gas from said engine; an exhaust outlet in communication with a second end of said second leg and configured to output said exhaust gas; and a muffler housing enclosing said curved inner tube, said exhaust inlet and said exhaust outlet extending from said muffler housing.